No Lift, No problem. As stated earlier... Jack stands as high as you can safely get them on the frame so you gan drop the axle as far as needed. Do the swap 1 axle at a time. The rear will go quicker than the front (IMO). You can have a big azz shop tool box, but only take what you will need tool wise under the vehicle. This is where the running back and forth comes in. Once you figure it out on one side, it will be the same on the other.
Another thing that works well, is a small tray for tools under the vehicle once ya figure out what ya need. Think old school tool box with the removable tray in the top. Keeps them all in one spot as long as you remember to keep them in it. sliding it to where you need it beats chasing down sockets that have rolled away.
I am getting ready to swap springs again. so it shouldn't take long (no lift and no garage, but do have the paved driveway). That said.... Take your time and double/triple check every thing when done on said axle. it would suck to have to go back and re-do something you forgot.
Lastly... Have fun. it is not a race. Get it right the first time.
EDIT.... KNEE PADS come in handy.